QA/Markdown: fix broken link

Author: jrfnl

CHANGELOG.md

@@ -272,7 +272,7 @@ _Nothing yet._
     - Thanks to [Atsushi Okui][@blue32a] for the patch
 - Support for PHPUnit 8 and 9 to the test suite
     - Test suites for external standards which run via the PHPCS native test suite can now run on PHPUnit 4-9 (was 4-7)
-    - If any of these tests use the PHPUnit `setUp()`/`tearDown()` methods or overload the `setUp()` in the `AbstractSniffUnitTest` test case, they will need to be adjusted. See the [PR details for further information](https://github.com/PHPCSStandards/PHP_CodeSniffer/pull/59/commits/26384ebfcc0b1c1651b0e1e40c9b6c8c22881832)
+    - If any of these tests use the PHPUnit `setUp()`/`tearDown()` methods or overload the `setUp()` in the `AbstractSniffUnitTest` test case, they will need to be adjusted. See the [PR details for further information](https://github.com/PHPCSStandards/PHP_CodeSniffer/pull/59/commits/bc302dd977877a22c5e60d42a2f6b7d9e9192dab)
     - Thanks to [Juliette Reinders Folmer][@jrfnl] for the patch
 
 ### Changed